Phase jumper

The Phase Jumper is a complex machine which relies on theoretical physics and dark energy to work. It acts by transmitting a wave of energy throughout a small area, creating a bubble of warped space inside real-space, allowing a user to easily slip between dimensions- seeming to others to move from place to place nearly instantly. It is a hard technology to master, dangerous to use, and unreliable at the best of times but capable of short-range teleportation even in the midst of combat, making it a valuable tool. A more hidden factor is that the dimensional slip can be manipulated- it can be used to slip through time as well as space (albeit only to go forward in time.)